Information Exposure Affecting kernel-rt-trace-devel package, versions <0:3.10.0-1062.rt56.1022.el7
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Test your applications- Snyk ID SNYK-CENTOS7-KERNELRTTRACEDEVEL-2139706
- published 26 Jul 2021
- disclosed 8 Mar 2018
Introduced: 8 Mar 2018
CVE-2018-7755 Open this link in a new tabHow to fix?
Upgrade Centos:7 kernel-rt-trace-devel to version 0:3.10.0-1062.rt56.1022.el7 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-trace-devel package and not the kernel-rt-trace-devel package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
An issue was discovered in the fd_locked_ioctl function in drivers/block/floppy.c in the Linux kernel through 4.15.7. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the location of kernel code and data and bypass kernel security protections such as KASLR.
References
- https://access.redhat.com/security/cve/CVE-2018-7755
- https://www.debian.org/security/2018/dsa-4308
- https://lkml.org/lkml/2018/3/7/1116
- https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html
- https://access.redhat.com/errata/RHSA-2019:2043
- https://usn.ubuntu.com/3695-1/
- https://usn.ubuntu.com/3695-2/
- https://usn.ubuntu.com/3696-1/
- https://usn.ubuntu.com/3696-2/
- https://usn.ubuntu.com/3697-1/
- https://usn.ubuntu.com/3697-2/
- https://usn.ubuntu.com/3698-1/
- https://usn.ubuntu.com/3698-2/